SCHS189E January   1998  – October 2022 CD54HC540 , CD54HC541 , CD54HCT541 , CD74HC540 , CD74HC541 , CD74HCT540 , CD74HCT541

PRODUCTION DATA  

  1. 1 Features
  2. 2 Description
  3. 3 Revision History
  4. 4 Pin Configuration and Functions
  5. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 Recommended Operating Conditions
    3. 5.3 Thermal Information
    4. 5.4 Electrical Characteristics
    5. 5.5 Switching Characteristics
  6. 6 Parameter Measurement Information
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Device Functional Modes
  8. 8 Power Supply Recommendations
  9. 9 Layout
    1. 9.1 Layout Guidelines
  10. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • N|20
  • DW|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5.5 Switching Characteristics

PARAMETER TEST CONDITIONS VCC (V) 25℃ –40℃ to 85℃ –55℃ to 125℃ UNIT
MIN TYP MAX MIN MAX MIN MAX
HC TYPES
tPLH, tPHL

Propagation delay

Data to outputs (540)

 CL = 50 pF 2 110 140 165 ns
4.5 22 28 33
CL = 15 pF 5 9 ns
CL = 50 pF 6 19 24 28
tPLZ, tPHZ Data to outputs (541) CL = 50 pF 2 115 145 175 ns
4.5 23 29 35
CL = 15 pF 5 9 ns
CL = 50 pF 6 20 25 30
tPLZ, tPHZ Output enable and disable to outputs (540) CL = 50 pF 2 160 200 240 ns
4.5 32 40 48
CL = 15 pF 5 13 ns
CL = 50 pF 6 27 34 41
tPLZ, tPHZ Output enable and disable to outputs (541) CL = 50 pF 2 160 200 240 ns
4.5 32 40 48
CL = 15 pF 5 14 ns
CL = 50 pF 6 23 29 35
tTHL, tTLH Output transition time CL = 50 pF 2 60 75 90 ns
4.5 12 15 18
6 10 13 15
CI Input capacitance CL = 50 pF 10 10 10 10 pF
CO Three-state output capacitance 20 20 20 20 pF
CPD Power dissipation capacitance(1)(2) (540) CL = 15 pF 5 50 pF
CPD Power dissipation capacitance(1)(2) (541) CL = 15 pF 5 48 pF
HCT TYPES
tPHL, tPLH

Propagation delay

Data to outputs (540)

 CL = 50 pF 4.5 24 30 36 ns
CL = 15 pF 5 9
tPHL, tPLH Data to outputs (541) CL = 50 pF 4.5 28 35 42 ns
CL = 15 pF 5 11
tPLZ, tPHZ Output enable and disable to outputs (540, 541) CL = 50 pF 4.5 35 44 53 ns
CL = 15 pF 5 14
tTLH, tTHL Output transition time CL = 50 pF 4.5 12 15 18 ns
CI Input capacitance CL = 50 pF 10 10 10 10 pF
CO Three-state output capacitance 20 20 20 20 pF
CPD Power dissipation capacitance(1)(2) (540, 541) CL = 15 pF 5 55 pF
(1) CPD is used to determine the dynamic power consumption, per channel.
(2) PD = VCC2fi (CPD + CL) where fi = input frequency, CL = output load capacitance, VCC = supply voltage.